CN114829191A - Vehicle seat - Google Patents
Vehicle seat Download PDFInfo
- Publication number
- CN114829191A CN114829191A CN202080087172.0A CN202080087172A CN114829191A CN 114829191 A CN114829191 A CN 114829191A CN 202080087172 A CN202080087172 A CN 202080087172A CN 114829191 A CN114829191 A CN 114829191A
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- China
- Prior art keywords
- wall
- actuator
- frame
- fluid bag
- vehicle seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012530 fluid Substances 0.000 claims abstract description 135
- 230000008602 contraction Effects 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 description 36
- 230000003014 reinforcing effect Effects 0.000 description 12
- 230000000149 penetrating effect Effects 0.000 description 8
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/914—Hydro-pneumatic adjustments of the shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/62—Thigh-rests
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
[ problem ] to reduce a driving force for expanding and contracting a seat in a vehicle seat. [ solution ] A vehicle seat (1) is provided with: a first frame (15); a second frame (16) supported to be movable relative to the first frame toward the first side and a second side opposite to the first side; and an actuator (30) that moves the second frame relative to the first frame toward the first side and the second side. The actuator (30) comprises: a first actuator (31) that pushes the second frame toward the first side; a second actuator (32) that pushes the second frame toward the second side; and a control device (33) that controls the urging forces generated by the first actuator and the second actuator, respectively. Each of the first actuator (31) and the second actuator (32) includes a fluid bag (35, 36) to and from which compressed air is supplied and discharged by the control device (33).
Description
Technical Field
The present invention relates to a vehicle seat.
Background
Documents of the prior art
Patent document
[ patent document 1] JP2015-47384A
Disclosure of Invention
Task to be accomplished by the invention
In the vehicle seat of patent document 1, it is necessary to supply air to the fluid bag to extend the seat cushion against the urging force of the spring, and there is a problem that a large driving force is required to expand and contract the seat.
In view of the above background, an object of the present invention is to provide a vehicle seat in which a driving force for expanding and contracting the seat is reduced.
Method for completing task
In order to achieve the above object, the present invention provides a vehicle seat (1) including: a first frame (15); a second frame (16) supported to be movable relative to the first frame toward a first side and a second side opposite the first side; and an actuator (30) for moving the second frame relative to the first frame toward a first side and a second side, wherein the actuator includes a first actuator (31) that urges the second frame toward the first side, a second actuator (32) that urges the second frame toward the second side, and a control device (33) that controls an urging force generated by each of the first actuator and the second actuator.
According to this aspect, when one of the actuators generates an urging force, the other actuator can be made not to generate a resistance force. Thereby, the driving force for expanding and contracting the seat can be reduced.
In the above aspect, preferably, each of the first actuator and the second actuator includes a fluid bag (35, 36) to and from which compressed air is supplied and discharged by the control device.
According to this aspect, the first actuator and the second actuator can be formed simply and at low cost.
In the above aspect, preferably, the first frame includes a first wall (51) and a second wall (52) disposed on the first side with respect to the first wall, the second frame includes a pressure receiving plate (53) disposed between the first wall and the second wall, the first actuator includes a first fluid bag (35) disposed between the first wall and the pressure receiving plate, the second actuator includes a second fluid bag (36) disposed between the second wall and the pressure receiving plate, and compressed air is supplied to and discharged from the first and second fluid bags through the control device.
According to this aspect, the actuator can be simply formed.
In the above aspect, preferably, the first actuator includes a guide member (80) that slidably contacts the first fluid bag and restricts an expansion and contraction direction of the first fluid bag to the first side and the second side.
According to this aspect, the expansion of the first fluid bag can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, the first actuator includes a rail (84) extending from the first side toward the second side and a slider (85) supported by the rail to be slidably movable and engaged with the first fluid bag.
According to this aspect, the expansion of the first fluid bag can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, an end portion of the first fluid bag on the first side and an end portion of the second fluid bag on the second side are joined to each other by a connecting member (87) penetrating the pressure receiving plate.
According to this aspect, the positions of the first fluid bag and the second fluid bag with respect to the pressure receiving plate become stable. Thereby, the expansion of the first and second fluid bags can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, a lower portion of the first wall and a lower portion of the second wall are coupled by a bottom wall, and the first wall, the bottom wall, and the second wall cooperate to form an upwardly open groove structure.
According to this aspect, the first and second fluid bags can be contained within a groove structure.
In the above aspect, preferably, the first frame is a frame constituting the seat cushion, and includes a left-side member and a right-side member (17) and a front member (18) coupling front ends of the left-side member and the right-side member to each other, and the second frame includes an upper plate (22) provided on an upper surface of the front member and supported to be movable to a front side and a rear side with respect to the front member, and a front plate (23) depending from a front end of the upper plate to be disposed forward of the front member.
According to this aspect, it is possible to expand and contract the front portion of the seat cushion in the front-rear direction.
In the above aspect, preferably, the front member has an opening (71) penetrating vertically therethrough and extending in the front-rear direction, and the pressure receiving plate extends from the upper plate to pass through the opening and protrude below the front member.
According to this aspect, the pressure receiving plate can be disposed at a position where it does not interfere with the legs of the occupant.
In the above aspect, preferably, the first wall and the second wall are provided below the front member.
According to this aspect, the first wall and the second wall can be disposed at positions where they do not interfere with the legs of the occupant.
ADVANTAGEOUS EFFECTS OF INVENTION
A vehicle seat (1) includes: a first frame (15); a second frame (16) supported to be movable relative to the first frame toward a first side and a second side opposite the first side; and an actuator (30) for moving the second frame relative to the first frame toward the first side and the second side, wherein the actuator includes a first actuator (31) that urges the second frame toward the first side, a second actuator (32) that urges the second frame toward the second side, and a control device (33) that controls an urging force generated by each of the first actuator and the second actuator. According to this aspect, when one of the actuators generates an urging force, the other actuator can be made not to generate a resistance force. Thereby, the driving force for expanding and contracting the seat can be reduced.
In the above aspect, preferably, each of the first actuator and the second actuator includes a fluid bag (35, 36) to and from which compressed air is supplied and discharged by the control device. According to this aspect, the first actuator and the second actuator can be formed simply and at low cost.
In the above aspect, preferably, the first frame includes a first wall (51) and a second wall (52) disposed on the first side with respect to the first wall, the second frame includes a pressure receiving plate (53) disposed between the first wall and the second wall, the first actuator includes a first fluid bag (35) disposed between the first wall and the pressure receiving plate, the second actuator includes a second fluid bag (36) disposed between the second wall and the pressure receiving plate, and compressed air is supplied to and discharged from the first and second fluid bags through the control device. According to this aspect, the actuator can be simply formed.
In the above aspect, preferably, the first actuator includes a guide member (80) that slidably contacts the first fluid bag and restricts an expansion and contraction direction of the first fluid bag to the first side and the second side. According to this aspect, the expansion of the first fluid bag can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, the first actuator includes a rail (84) extending from the first side toward the second side and a slider (85) supported by the rail to be slidably movable and engaged with the first fluid bag. According to this aspect, the expansion of the first fluid bag can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, an end portion of the first fluid bag on the first side and an end portion of the second fluid bag on the second side are joined to each other by a connecting member (87) penetrating the pressure receiving plate. According to this aspect, the positions of the first fluid bag and the second fluid bag with respect to the pressure receiving plate become stable. Thereby, the expansion of the first and second fluid bags can be efficiently converted into the movement of the second frame.
In the above aspect, preferably, the lower portion of the first wall and the lower portion of the second wall are coupled by a bottom wall, and the first wall, the bottom wall, and the second wall cooperate to form an upwardly open groove structure. According to this aspect, the first and second fluid pockets can be received within the groove structure.
In the above aspect, preferably, the first frame is a frame constituting the seat cushion, and includes a left-side member and a right-side member (17) and a front member (18) coupling front ends of the left-side member and the right-side member to each other, and the second frame includes an upper plate (22) provided on an upper surface of the front member and supported to be movable to a front side and a rear side with respect to the front member, and a front plate (23) depending from a front end of the upper plate to be arranged in front of the front member. According to this aspect, it is possible to expand and contract the front portion of the seat cushion in the front-rear direction.
In the above aspect, preferably, the front member has an opening (71) penetrating vertically therethrough and extending in the front-rear direction, and the pressure receiving plate extends from the upper plate to pass through the opening and protrude below the front member. According to this aspect, the pressure receiving plate can be disposed at a position where it does not interfere with the legs of the occupant.
In the above aspect, preferably, the first wall and the second wall are provided below the front member. According to this aspect, the first wall and the second wall can be disposed at positions where they do not interfere with the legs of the occupant.
Drawings
FIG. 1 is a perspective view of a seat according to an embodiment;
fig. 2 is a perspective view of the seat cushion frame;
fig. 3 is a sectional view of the front portion of the cushion frame (III-III sectional view of fig. 2);
fig. 4 is a bottom view of the front portion of the seat cushion frame;
fig. 5 is a sectional view (IV-IV sectional view of fig. 2) of the front portion of the seat cushion frame;
fig. 6 is a configuration diagram of an actuator and a control device;
FIG. 7 is a perspective view of the guide member;
fig. 8 is an explanatory diagram showing a modification of the actuator;
fig. 9 is an explanatory view showing a modification of the fluid bag;
fig. 10 is an explanatory view showing (a) a first embodiment, (B) a second embodiment, and (C) a third embodiment of a unit constituting a fluid bag; and
fig. 11 is a sectional view of a front portion of a seat cushion frame according to a modification.
Detailed Description
Hereinafter, an embodiment in which the vehicle seat according to the present invention is applied to a seat of an automobile will be described with reference to the accompanying drawings.
As shown in fig. 1, the seat 1 includes a seat cushion 3 provided on a floor 2 of the automobile and a seat back 4 supported on a rear portion of the seat cushion 3. As shown in fig. 2, the seat cushion 3 may be disposed on the floor 2 by slide rails 6. The slide rail 6 includes left and right lower rails 6A joined to the floor 2 and left and right upper rails 6B slidably movably supported by the left and right lower rails 6A, respectively. The seat cushion 3 is engaged with the left and right upper rails 6B. The lifter may be interposed between the seat cushion 3 and the upper rail 6B.
The seat cushion 3 includes a cushion frame 11 forming a skeleton, a cushion 12 supported by the cushion frame 11, and a cover member 13 covering a surface of the cushion 12. The seat cushion frame 11 includes a first frame 15 and a second frame 16 supported to be movable relative to the first frame 15 toward a first side and a second side opposite to the first side. Since the second frame 16 is movable relative to the first frame 15, it may be referred to as a movable frame. In the present embodiment, the second frame 16 is movable relative to the first frame 15 toward the front side as the first side and the rear side as the second side.
In the present embodiment, the first frame 15 includes left and right side members 17 extending in the front-rear direction and a front member 18 extending laterally to couple front ends of the left and right side members 17 to each other. Further, the first frame 15 may include a rear part 19 extending laterally to couple rear ends of the left and right side parts 17 to each other. The left and right side members 17 and the front member 18 are formed by bending a metal plate. The front member 18 includes a plate-like portion 21, and the plate-like portion 21 has upward and downward surfaces at a laterally central portion thereof. The plate-shaped portion 21 has a predetermined width in the front-rear direction.
The second frame 16 includes an upper plate 22 provided on an upper surface of a plate-like portion 21 of the front member 18 and supported to be movable to the front and rear sides with respect to the front member 18, and a front plate 23 extending downward from a front end of the upper plate 22 to be provided in front of the front member 18.
As shown in fig. 2 and 3, the plate-like portion 21 of the front member 18 is formed with a housing recess 25 recessed downward. The housing recess 25 is provided in the front portion of the plate-shaped portion 21. The front end of the housing recess 25 reaches the front end of the front member 18. On the other hand, the rear end of the housing recess 25 is located on the upper surface of the plate-like portion 21. A pair of left and right support members 26 extending in the front-rear direction are provided on the upper surface of the bottom portion 25A of the housing recess 25. Each support member 26 is made of a resin material. Each of the support members 26 is preferably made of a resin material having a low friction coefficient. The upper plate 22 of the second frame 16 is placed on the upper surfaces of the left and right support members 26 so as to be slidable in the front-rear direction.
The upper plate 22 is formed with a plurality of elongated holes 27 penetrating therethrough in the thickness direction and extending in the front-rear direction. In the present embodiment, the elongated holes 27 include two pairs, a left pair and a right pair, which are provided at positions overlapping with the support members 26 in plan view. The upper plate 22 is attached to the support member 26 and the front member 18 so as to be slidably movable in the front-rear direction by passing a plurality of nuts 29 and bolts 28 through the elongated holes 27, the support member 26, and the bottom 25A of the housing recess 25. In a state where the upper plate 22 is placed on the support member 26, the upper surface of the upper plate 22 is arranged at the same height as the upper surface of the front member 18 excluding the housing recess 25.
As shown in fig. 3, the left and right side edges and the rear edge of the upper plate 22 are provided with edge walls 22A extending downward. The edge wall 22A is preferably formed by bending the side edge of the upper plate 22. Also, the central portion of the upper plate 22 is provided with a reinforcing rib 22B that protrudes upward and extends in the front-rear direction.
As shown in fig. 2, 4 and 5, the front plate 23 is formed to have a curved surface that is convex forward when viewed from the side. The front plate 23 is formed with a plurality of reinforcing ribs 23A extending vertically. The plurality of reinforcing ribs 23A are preferably arranged in the lateral direction. The second frame 16 is preferably formed by bending molding of a metal plate.
As the upper plate 22 is displaced in the front-rear direction with respect to the bolt 28 provided in each elongated hole 27, the second frame 16 moves between the initial position and the protruding position with respect to the front member 18 of the first frame 15. The second frame 16 reaches the protruding position by moving from the initial position toward the front side as the first side. Further, the second frame 16 returns to the initial position by moving from the protruding position toward the rear side as the second side.
The pad 12 is arranged to cover the upper surface and the front surface of the second frame 16. When the second frame 16 moves from the initial position to the protruding position, the second frame 16 slides with respect to the pad 12. The gasket 12 has a sufficient length to cover the front plate 23 of the second frame 16 even when the second frame 16 is in the protruding position. The front edge of the cushion 12 preferably extends lower than the lower edge of the front plate 23 of the second frame 16 when the second frame 16 is in the initial position.
The vehicle seat 1 further includes an actuator 30 for moving the second frame 16 toward the front side and the rear side with respect to the first frame 15. The actuator 30 includes a first actuator 31 that urges the second frame 16 toward the front side, a second actuator 32 that urges the second frame 16 toward the rear side, and a control device 33 that controls the urging force generated by each of the first actuator 31 and the second actuator 32.
As shown in fig. 5 and 6, the first actuator 31 and the second actuator 32 include fluid bags 35, 36, respectively, and the fluid bags 35, 36 expand when compressed air is supplied and contract when compressed air is discharged. The first actuator 31 comprises at least one first fluid bag 35 and the second actuator 32 comprises at least one second fluid bag 36. The control device 33 includes a compressor 38 that generates compressed air, a first connection pipe 39 that connects the compressor 38 and the first fluid bag 35 of the first actuator 31, a second connection pipe 40 that connects the compressor 38 and the second fluid bag 36 of the second actuator 32, a first control valve 41 provided in the first connection pipe 39, a second control valve 42 provided in the second connection pipe 40, an electronic control unit 43(ECU) that controls the compressor 38, the first control valve 41, and the second control valve 42, and an operation switch 44 for inputting signals to the electronic control unit 43. The operation switch 44 includes an extension button and a contraction button, and outputs a signal according to the operation state of the extension button and the contraction button to the electronic control device 43.
The first control valve 41 and the second control valve 42 are each capable of assuming a supply state for connecting the compressor 38 with the fluid bags 35, 36, a holding state for blocking the inflow and outflow of air into and out of the fluid bags 35, 36, and a discharge state for connecting the fluid bags 35, 36 with the outside, respectively. When the control valves 41, 42 are in the supply state, compressed air is supplied to the respective fluid bags 35, 36, and the fluid bags 35, 36 are inflated. When the control valves 41, 42 are in the holding state, air is prevented from flowing into and out of the respective fluid bags 35, 36, and the size of the fluid bags 35, 36 is maintained. When the control valves 41, 42 are in the discharge state, the compressed air in the respective fluid bags 35, 36 is discharged to the outside, and the fluid bags 35, 36 contract.
The first frame 15 includes a first wall 51 and a second wall 52 disposed on the front side with respect to the first wall 51. The second frame 16 includes a pressure receiving plate 53 disposed between the first wall 51 and the second wall 52. The first fluid bag 35 is disposed between the first wall 51 and the pressure receiving plate 53, and the second fluid bag 36 is disposed between the second wall 52 and the pressure receiving plate 53. When the first and second fluid bags 35, 36 expand and contract, the pressure receiving plate 53 moves relative to the first and second walls 51, 52, and the second frame 16 moves in the front-rear direction relative to the first frame 15.
In the present embodiment, the first wall 51 and the second wall 52 are constituted by a housing 55 attached to the plate-like portion 21 of the front member 18. As shown in fig. 4 and 5, a laterally extending reinforcing member 56 is attached to the lower surface of the plate-like portion 21. The reinforcing member 56 is formed in a groove shape that opens upward. The reinforcing member 56 forms a closed cross-sectional structure together with the plate-shaped portion 21. The reinforcing member 56 is provided on the plate-shaped portion 21 at a position further rearward than the housing recess 25. The reinforcing member 56 may extend along the rear wall portion 25B forming the rear edge of the housing recess 25 such that the rear wall portion 25B constitutes a part of the closed cross-sectional structure.
The housing 55 includes a rear flange 58 extending laterally and fastened to the reinforcing member 56, a first wall 51 extending downward from a front edge of the rear flange 58 and having front and rear facing surfaces, a bottom wall 59 extending forward from a lower edge of the first wall 51 and having upper and lower facing surfaces, and a second wall 52 extending upward from a front edge of the bottom wall 59 and having front and rear facing surfaces. The first wall 51 and the second wall 52 are opposed to each other via a distance in the front-rear direction. The bottom wall 59 couples the lower portion of the first wall 51 and the lower portion of the second wall 52 to each other. The first wall 51, the bottom wall 59 and the second wall 52 cooperate to form an upwardly open and laterally extending groove structure. Each of the first wall 51, the bottom wall 59, and the second wall 52 is preferably provided below the front member 18, specifically, below the bottom 25A of the housing recess 25 of the plate-like portion 21.
The right ends of the first wall 51, the bottom wall 59 and the second wall 52 are preferably coupled to one another by an end wall 61 having left and right facing surfaces. Similarly, the left end portions of the first wall 51, the bottom wall 59 and the second wall 52 are preferably coupled to one another by an end wall 61 having left and right facing surfaces. The first wall 51, the bottom wall 59, the second wall 52, and the left and right end walls 61 cooperate with each other to form an upwardly open box structure. The upper ends of the end walls 61 are preferably provided with left and right side flanges 62, respectively, which are fastened to the lower surface of the plate-like portion 21 of the front member 18. Each side flange 62 is preferably fastened to the lower surface of the bottom 25A of the housing recess 25 of the plate-like portion 21. Some of the plurality of bolts 28 and nuts 29 may fasten the side flange 62, the upper plate 22, the support member 26, and the bottom 25A of the housing recess 25 together.
The housing 55 preferably includes a plurality of reinforcing ribs 64 that couple the first wall 51 with the rear flange 58 at a boundary portion between the first wall 51 and the rear flange 58. Each reinforcing rib 64 is formed in a triangular plate shape having left and right facing surfaces. The reinforcing ribs 64 suppress the inclination of the first wall 51 with respect to the rear flange 58.
As shown in fig. 5, the pressure receiving plate 53 extends downward from the lower surface of the upper plate 22 of the second frame 16. The pressure receiving plate 53 is preferably formed of a plate-like member 66 fastened to the upper plate 22. The plate-like member 66 has a flange 67 fastened to the lower surface of the upper plate 22. The pressure receiving plate 53 extends downward from an edge portion of the flange 67, and has front and rear facing surfaces. The plate-like member 66 is preferably formed in an L-shape by the flange 67 and the pressure receiving plate 53.
The plate-like portion 21 of the front member 18 has an opening 71 vertically penetrating therethrough and extending in the front-rear direction. An opening 71 is formed in the bottom 25A of the housing recess 25. The opening 71 extends in the front-rear direction and reaches the front edge of the front member 18. The pressure receiving plate 53 protrudes below the plate-like portion 21 through the opening 71, and is disposed between the first wall 51 and the second wall 52. The lower end of the pressure receiving plate 53 is opposed to the bottom wall 59 through a gap. The front-rear length of the opening 71 is set so that the pressure receiving plate 53 can move forward and backward in response to the forward and backward movement of the second frame 16.
The first fluid pouch 35 and the second fluid pouch 36 are formed by joining edges of a plurality of sheets to each other. For example, the sheet is preferably made of resin such as vinyl and polyurethane. For example, the joining of the sheets is preferably achieved by thermal welding. Each of the first and second fluid bags 35, 36 preferably includes a plurality of cells 73. The plurality of units 73 may be independent of each other, and each of them may be connected to the first connection pipe 39 or the second connection pipe 40. Alternatively, the plurality of units 73 may be coupled to each other to allow air to flow therebetween, and one of the plurality of units 73 may be connected to the first connection pipe 39 or the second connection pipe 40.
Each of the plurality of cells 73 constituting the first fluid bag 35 and the second fluid bag 36 is preferably formed in a disc shape so as to be expandable and contractible in the axial direction. Further, the plurality of cells 73 formed in a disc shape are preferably arranged in the axial direction and engaged with each other. Thereby, the first fluid bag 35 and the second fluid bag 36 can be expanded and contracted in the front-rear direction.
As shown in fig. 3 and 7, in the present embodiment, the first actuator 31 includes two laterally arranged first fluid bags 35, and each first fluid bag 35 includes a plurality of cells 73 arranged in the front-rear direction. As shown in fig. 5, the rear end of each first fluid bag 35 is provided with at least one connecting member 74, and the connecting member 74 is joined to the first wall 51 by a fastening member 75 such as a clip or a rivet. The front end of each first fluid bag 35 is in contact with the rear surface of the pressure receiving plate 53. The front end of each first fluid bag 35 may be provided with a connector such that the connector is joined to the pressure receiving plate 53 by a fastening member such as a clip or a rivet.
As shown in fig. 3, the second actuator 32 includes two laterally arranged second fluid bags 36, and each second fluid bag 36 includes a plurality of cells 73 arranged in the front-rear direction. As shown in fig. 5, the front end of each second fluid bag 36 is provided with at least one connecting member 76, and the connecting member 76 is joined to the second wall 52 by a fastening member 77 such as a clip or a rivet. The rear end of each second fluid bag 36 is in contact with the front surface of the pressure receiving plate 53. The rear end of each second fluid bag 36 may be provided with a connector such that the connector is joined to the pressure receiving plate 53 by a fastening member such as a clip or a rivet.
The first fluid bag 35 and the second fluid bag 36 are housed in a recess structure (case structure) of the case 55. Thereby, the directions of expansion and contraction of the first fluid bag 35 and the second fluid bag 36 are restricted, and the expansion and contraction of the first fluid bag 35 and the second fluid bag 36 are effectively converted into the movement of the pressure receiving plate 53.
As shown in fig. 7, the first actuator 31 preferably includes a guide member 80 slidably contacting the first fluid bag 35 and restricting the expansion and contraction directions of the first fluid bag 35 to the front and rear sides. Preferably, the guide member 80 is provided on the upper surface of the bottom wall 59. The guide member 80 includes a guide wall 81 projecting upward from the bottom wall 59 and extending in the front-rear direction. The guide wall 81 is preferably disposed between the left and right first fluid bags 35. Further, the guide member 80 preferably has left and right guide grooves 82 recessed downward and extending in the front-rear direction. In each guide groove 82, a lower portion of the corresponding first fluid bag 35 is disposed. The shape of the cross-section of the guide groove 82 preferably matches the shape of the lower portion of the first fluid bag 35. In the present embodiment, since the first fluid pouch 35 has a circular cross-section, the guide groove 82 is preferably formed to have a semicircular cross-section. The guide member 80 is provided between the lower end of the pressure receiving plate 53 and the bottom wall 59 so as not to interfere with the pressure receiving plate 53. Further, the pressure receiving plate 53 may be formed with a cutout for avoiding interference with the guide member 80. Due to the guide member 80, the directions of expansion and contraction of the first fluid bag 35 become stable, and the first fluid bag 35 can effectively push the pressure receiving plate 53.
Similar to the first actuator 31, the second actuator 32 preferably includes a guide member that restricts the expansion and contraction directions of the second fluid bag 36 to the front side and the rear side. The configuration of the guide member of the second actuator 32 may be similar to the configuration of the guide member 80 of the first actuator 31.
The first actuator 31 may include a pair of rails 84 extending from the front side toward the rear side and a pair of sliders 85 supported by the respective rails 84 so as to be slidably movable and engaged to the respective first fluid bags 35. Each slider 85 is preferably coupled to the front end of a corresponding first fluid bag 35. Preferably, each track 84 is disposed on the bottom wall 59. Due to the rails 84 and the sliders 85, the front end of the first fluid bag 35 moves along the corresponding rails 84. Thereby, the directions of expansion and contraction of the first fluid bag 35 become stable, and the first fluid bag 35 can effectively push the pressure receiving plate 53.
The first actuator 31 preferably includes at least one of a rail 84 and a slider 85, a guide wall 81, and a guide groove 82.
Similar to the first actuator 31, the second actuator 32 may include a pair of rails extending from the front side toward the rear side and a pair of sliders supported by the respective rails so as to be slidably movable and engaged to the respective second fluid bags 36. Each slider is preferably joined to the rear end of a respective second fluid bag 36. The structure of the track and the slider of the second actuator 32 may be similar to that of the first actuator 31.
As shown in fig. 8, the front end of the first fluid bag 35, which is the end portion on the first side, and the rear end of the second fluid bag 36, which is the end portion on the second side, may be engaged with each other by a connecting member 87 penetrating the pressure receiving plate 53. For example, the connecting member 87 is preferably composed of a shaft member extending in the front-rear direction to penetrate the pressure receiving plate 53. The pressure receiving plate 53 is formed with a through hole 88 through which the connecting member 87 passes. The through hole 88 may be a slit extending to the side edge of the pressure receiving plate 53. According to this aspect, the positions of the front end of the first fluid bag 35 and the rear end of the second fluid bag 36 with respect to the pressure receiving plate 53 are restricted, and the positions of the first fluid bag 35 and the second fluid bag 36 become stable when expanded and contracted.
As shown in fig. 9, the first fluid bag 35 may have a through hole 91 penetrating in the front-rear direction at the central portion. That is, the first fluid bag 35 may be formed in a ring shape or a tube shape having an axis extending in the front-rear direction at the center. In addition, a support shaft 92 extending in the front-rear direction is preferably inserted in the through hole 91 of the first fluid bag 35. In this structure, the first fluid bag 35 expands and contracts along the support shaft 92, and therefore, the pressure receiving plate 53 can be effectively pushed.
Each of the plurality of cells 73 constituting the first fluid bag 35 and the second fluid bag 36 may be configured as in the first to third examples shown in fig. 10. As shown in fig. 10(a), the unit 100 of the first example includes a circular front sheet 101, a circular rear sheet 102, and a peripheral sheet 103 formed in a cylindrical shape. The outer peripheral portion of the rear surface 101B of the front sheet 101 is heat-welded to the front end portion of the inner peripheral surface 103A of the outer peripheral sheet 103. Also, the outer peripheral portion of the front surface 102A of the rear sheet 102 is heat-welded to the rear end portion of the inner peripheral surface 103A of the outer peripheral sheet 103. Since the unit 100 has the outer peripheral sheet 103, the flexibility of the outer peripheral portion is high as compared with a unit in which the outer peripheral portion of the rear surface 101B of the front sheet 101 and the outer peripheral portion of the front surface 102A of the rear sheet 102 are directly heat-welded to each other, and the unit 100 can easily expand and contract in the front-rear direction even at the outer peripheral portion. Thereby, the directions of expansion and contraction of the first fluid bag 35 and the second fluid bag 36 constituted by the plurality of cells 100 tend to be stabilized. As a modification of the first example, the outer peripheral portion of the rear surface 101B of the front sheet 101 may be heat-welded to the front end portion of the outer peripheral surface 103B of the outer peripheral sheet 103, and the outer peripheral portion of the front surface 102A of the rear sheet 102 may be heat-welded to the rear end portion of the outer peripheral surface 103B of the outer peripheral sheet 103.
As shown in fig. 10(B), in addition to the structure of the unit 100 of the first example, the unit 110 of the second example further includes a connecting sheet 111 that couples a central portion of the rear surface 101B of the front sheet 101 with a central portion of the front surface 102A of the rear sheet 102. The connecting sheet 111 has a front end welded to the central portion of the rear surface 101B of the front sheet 101, and a rear end welded to the central portion of the front surface 102A of the rear sheet 102. When the unit 110 is inflated, the connection sheet 111 restricts the distance between the central portion of the front sheet 101 and the central portion of the rear sheet 102 so as not to be greater than or equal to a predetermined distance. Thereby, it is possible to avoid the expansion of only the central portion of the cell 110, and the difference in the amount of expansion between the central portion and the outer peripheral portion can be reduced.
As shown in fig. 10(C), the unit 120 of the third example includes a tubular inner peripheral sheet 121 and a tubular outer peripheral sheet 122 disposed on the outer peripheral side of the inner peripheral sheet 121. The length of the inner peripheral sheet 121 in the axial direction is longer than the length of the outer peripheral sheet 122 in the axial direction. The front end of the outer peripheral surface 121A of the inner peripheral sheet 121 is heat-welded to the front end of the inner peripheral surface 122B of the outer peripheral sheet 122 over the entire circumference. Also, the rear end of the outer peripheral surface 121A of the inner peripheral sheet 121 is thermally welded to the rear end of the inner peripheral surface 122B of the outer peripheral sheet 122 over the entire surface. Also, a central portion 121C in the axial direction of the inner peripheral surface 121B of the inner peripheral sheet 121 is thermally welded. The cell 120 of the third example can reduce the difference in the amount of expansion between the central portion and the outer peripheral portion.
The operation of the seat 1 relating to this embodiment will be described. While the occupant continues to press the expansion button of the operation switch 44, the electronic control device 43 drives the compressor 38 to generate compressed air, places the first control valve 41 in the supply state, and places the second control valve 42 in the discharge state, in accordance with a signal from the operation switch 44. Thereby, the compressed air generated by the compressor 38 is supplied to the first fluid bag 35 of the first actuator 31, and the first fluid bag 35 expands to push the pressure receiving plate 53 toward the front side. On the other hand, the second fluid bag 36 of the second actuator 32 is pushed by the pressure receiving plate 53, and the air in the second fluid bag 36 is discharged through the second control valve 42. Thereby, the pressure receiving plate 53 is pushed toward the front side by the first fluid bag 35 of the first actuator 31, and is moved forward relative to the front member 18.
While the occupant keeps pressing the contraction button of the operation switch 44, the electronic control device 43 drives the compressor 38 to generate compressed air, places the first control valve 41 in the discharge state, and places the second control valve 42 in the supply state, in accordance with a signal from the operation switch 44. Thereby, the compressed air generated by the compressor 38 is supplied to the second fluid bag 36 of the second actuator 32, and the second fluid bag 36 expands to push the pressure receiving plate 53 toward the rear side. On the other hand, the first fluid bag 35 of the first actuator 31 is pushed by the pressure receiving plate 53, and the air in the first fluid bag 35 is discharged through the first control valve 41. Thereby, the pressure receiving plate 53 is pushed toward the rear side by the second fluid bag 36 of the second actuator 32, and is moved rearward relative to the front member 18.
When the occupant does not press any of the expansion button and the contraction button of the operation switch 44, the electronic control device 43 stops the compressor 38 and places the first control valve 41 and the second control valve 42 in the holding state in accordance with the signal from the operation switch 44. Thereby, the expanded and contracted states of the first fluid bag 35 of the first actuator 31 and the second fluid bag 36 of the second actuator 32 are maintained, and the position of the second frame 16 with respect to the front member 18 is maintained.
As described above, the occupant can expand and contract the front portion of the seat cushion 3 in the front-rear direction by operating the switch 44.
In the seat 1 according to the present embodiment, when one of the first actuator 31 and the second actuator 32 generates the urging force, the other of the first actuator 31 and the second actuator 32 can be prevented from generating the resistance force. Thereby, the driving force for expanding and contracting the seat 1 can be reduced. Since the first actuator 31 and the second actuator 32 are formed of the fluid bags 35, 36, they can be formed simply and at low cost.
Since the pressure receiving plate 53, the actuator 30, and the housing 55 are disposed at the lower portion of the seat cushion 3, it is possible to avoid these structures from interfering with the legs of the occupant.
While the present invention has been described with reference to the specific embodiments, the present invention is not limited to the embodiments and may be modified or changed in various ways. For example, as shown in fig. 11, a connecting portion 68 for adjusting the position of the pressure receiving plate 53 may be provided between the flange 67 and the pressure receiving plate 53. The connecting portion 68 may extend downward from the front edge of the flange 67 and then be bent to extend rearward. The pressure receiving plate 53 may extend downward from the rear end of the connection portion 68.
List of reference numerals
1: chair (Ref. now to FIGS)
11: cushion frame
15: first frame
16: second frame
17: side member
18: front part
19: rear part
21: plate-shaped part
22: upper plate
23: front plate
25: accommodating recess
26: support member
27: elongated hole
29: bolt
30: actuator
31: first actuator
32: second actuator
33: control device
35: first fluid bag
36: second fluid bag
38: compressor with a compressor housing having a plurality of compressor blades
41: first control valve
42: second control valve
43: electronic control device
44: operating switch
51: first wall
52: second wall
53: pressure receiving plate
55: shell body
59: bottom wall
61: end wall
80: guide member
81: guide wall
82: guide groove
84: track
85: sliding block
87: connecting part
88: through hole
Claims (10)
1. A vehicle seat, comprising:
a first frame;
a second frame supported to be movable relative to the first frame toward a first side and a second side opposite to the first side; and
an actuator for moving the second frame relative to the first frame toward the first side and the second side,
wherein the actuator includes a first actuator that urges the second frame toward the first side, a second actuator that urges the second frame toward the second side, and a control device that controls an urging force generated by each of the first actuator and the second actuator.
2. The vehicle seat of claim 1, wherein each of the first and second actuators includes a fluid bag to which and from which compressed air is supplied and exhausted by the control device.
3. The vehicle seat of claim 1, wherein the first frame includes a first wall and a second wall disposed on the first side relative to the first wall,
the second frame includes a pressure receiving plate disposed between the first wall and the second wall,
the first actuator includes a first fluid bag disposed between the first wall and the pressure receiving plate,
the second actuator includes a second fluid bag provided between the second wall and the pressure receiving plate, and
compressed air is supplied to and exhausted from the first and second fluid bags by the control device.
4. The vehicle seat of claim 3, wherein the first actuator includes a guide member that slidably contacts the first pocket of fluid and restricts a direction of expansion and contraction of the first pocket of fluid to the first side and the second side.
5. The vehicle seat of claim 3, wherein the first actuator includes a track extending from the first side toward the second side and a slider supported by the track to be slidably movable and engaged with the first fluid pocket.
6. The vehicle seat according to any one of claims 3 to 5, wherein an end portion of the first fluid bag on the first side and an end portion of the second fluid bag on the second side are joined to each other by a connecting member that penetrates the pressure receiving plate.
7. The vehicle seat of any of claims 3-6, wherein the lower portion of the first wall and the lower portion of the second wall are coupled by a bottom wall, and
the first wall, the bottom wall and the second wall cooperate to form an upwardly open groove structure.
8. The vehicle seat according to any one of claims 3 to 7, wherein the first frame is a frame that constitutes the seat cushion, and includes a left-side member and a right-side member and a front member that couples front ends of the left-side member and the right-side member to each other, and
the second frame includes an upper plate provided on an upper surface of the front member and supported to be movable to a front side and a rear side with respect to the front member, and a front plate hung from a front end of the upper plate to be disposed in front of the front member.
9. The vehicle seat according to claim 8, wherein the front member has an opening that penetrates therethrough vertically and extends in a front-rear direction, and
the pressure receiving plate extends from the upper plate to pass through the opening and protrude below the front member.
10. The vehicle seat of claim 9, wherein the first wall and the second wall are disposed below the front component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019230108 | 2019-12-20 | ||
| JP2019-230108 | 2019-12-20 | ||
| PCT/JP2020/047091 WO2021125254A1 (en) | 2019-12-20 | 2020-12-17 | Vehicle seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114829191A true CN114829191A (en) | 2022-07-29 |
Family
ID=76477583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080087172.0A Pending CN114829191A (en) | 2019-12-20 | 2020-12-17 | Vehicle seat |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240166106A1 (en) |
| JP (1) | JPWO2021125254A1 (en) |
| CN (1) | CN114829191A (en) |
| WO (1) | WO2021125254A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232078A (en) * | 1989-04-28 | 1990-12-05 | Okamoto Ind Inc | Adjustable vehicle seat |
| JPH11332929A (en) * | 1998-05-22 | 1999-12-07 | Toshiba Tec Corp | Legless chair type massage machine |
| KR100649545B1 (en) * | 2005-08-08 | 2006-11-27 | 정진고 | A reciprocating motion apparatus |
| JP2010279650A (en) * | 2009-06-08 | 2010-12-16 | Honda Motor Co Ltd | Vehicle seat device |
| CN107000610A (en) * | 2014-11-12 | 2017-08-01 | 提爱思科技股份有限公司 | Seat |
| CN110027448A (en) * | 2018-01-12 | 2019-07-19 | 提爱思科技股份有限公司 | Vehicle seat |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02142329A (en) * | 1988-11-18 | 1990-05-31 | Nec Corp | Domestic power interruption backup system |
| JP4029446B2 (en) * | 1997-11-19 | 2008-01-09 | トヨタ紡織株式会社 | Vehicle seat |
| JP2014111406A (en) * | 2012-12-05 | 2014-06-19 | Toyota Boshoku Corp | Vehicular seat |
| JP7231822B2 (en) * | 2018-01-12 | 2023-03-02 | テイ・エス テック株式会社 | vehicle seat |
-
2020
- 2020-12-17 US US17/785,969 patent/US20240166106A1/en active Pending
- 2020-12-17 CN CN202080087172.0A patent/CN114829191A/en active Pending
- 2020-12-17 WO PCT/JP2020/047091 patent/WO2021125254A1/en active Application Filing
- 2020-12-17 JP JP2021565638A patent/JPWO2021125254A1/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232078A (en) * | 1989-04-28 | 1990-12-05 | Okamoto Ind Inc | Adjustable vehicle seat |
| JPH11332929A (en) * | 1998-05-22 | 1999-12-07 | Toshiba Tec Corp | Legless chair type massage machine |
| KR100649545B1 (en) * | 2005-08-08 | 2006-11-27 | 정진고 | A reciprocating motion apparatus |
| JP2010279650A (en) * | 2009-06-08 | 2010-12-16 | Honda Motor Co Ltd | Vehicle seat device |
| CN107000610A (en) * | 2014-11-12 | 2017-08-01 | 提爱思科技股份有限公司 | Seat |
| CN110027448A (en) * | 2018-01-12 | 2019-07-19 | 提爱思科技股份有限公司 | Vehicle seat |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021125254A1 (en) | 2021-06-24 |
| US20240166106A1 (en) | 2024-05-23 |
| JPWO2021125254A1 (en) | 2021-06-24 |
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